Polishing device

ABSTRACT

A polishing device includes a driving member and a polishing head. The polishing head is connected to the driving member and includes a rotating body made of metallic material, a buffering pad, and an abrasive paper. The buffering pad is made of plastic material and is fixedly assembled to the rotating body. The abrasive paper is fixed to a surface of the buffering pad opposite to the rotating body.

BACKGROUND

1. Technical Field

The present disclosure relates to a polishing device.

2. Description of Related Art

Polishing devices may include a polishing head made of a plastic material to polish a workpiece. The polishing head may be deformed when positioned at a periphery of the workpiece, thus a peripheral edge of the workpiece polished by the polishing head may collapse. To protect the workpiece, a protecting fixture is employed to shield the edge of the workpiece. However, when the polishing device polishes the workpiece, it also polishes the protecting fixture. The polishing procedure is complicated using the protecting fixture, and the polishing head is worn down easily.

Therefore, there is room for improvement in the art.

BRIEF DESCRIPTION OF THE DRAWINGS

The components in the drawings are not necessarily drawn to scale, the emphasis instead placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is an isometric view of an embodiment of a polishing device.

FIG. 2 is an exploded, isometric view of the polishing device of FIG. 1.

DETAILED DESCRIPTION

FIGS. 1 and 2 show an embodiment of a polishing device 100 employed to polish a housing of an electronic device, such as a desktop computer, a notebook, a tablet computer, or a mobile phone, thereby enhancing a finish of the housing. The polishing device 100 includes a driving member 10 and a polishing head 30 connected to the driving member 10. The polishing head 30 is driven by the driving member 10 to rotate and polish a surface of the housing.

The driving member 10 includes a driving body 12, an elastic coupler 16, and a rotating shaft 14 interconnecting the elastic coupler 16 and the driving body 12. The driving body 12 drives the elastic coupler 16 to rotate via the rotating shaft 14.

The polishing head 30 is substantially disc-shaped and is connected to the elastic coupler 16. The polishing head 30 includes a rotating body 32, a buffering pad 34, a plurality of fixing members 36, and an abrasive paper 38. In the embodiment, the rotating body 32 is made of metallic materials and is substantially disc-shaped. A top surface of the rotating body 32 is fixedly connected to the elastic coupler 16 away from the driving body 12. A bottom surface of the rotating body 32 defines a plurality of fixing holes 322.

The buffering pad 34 is substantially disc-shaped and has a diameter substantially equal to a diameter of the bottom of the rotating body 32. The buffering pad 34 is made of plastic material. In the embodiment, the buffering pad 34 is made of polyurethane rubber having a high temperature resistance, high acid corrosion resistance, and alkali corrosion resistance. The buffering pad 34 buffers vibration from the abrasive paper 38 when the abrasive paper 38 polishes a workpiece. The buffering pad 34 defines a plurality of stepped holes 342 corresponding to the plurality of fixing holes 322 of the rotating body 32. The buffering pad 34 can be made of other materials such as rubber.

The plurality of fixing members 36 can be screws for assembling the buffering pad 34 to the rotating body 32. The abrasive paper 38 is a gummed abrasive paper, and a surface of the abrasive paper 38 facing the buffering pad 34 is coated with an adhesive. The abrasive paper 38 has a diameter substantially equal to that of the buffering pad 34.

In assembly, the rotating body 32 is assembled to the elastic coupler 16 away from the driving body 12 via a shaft (not labeled). The plurality of fixing members 36 are received through the plurality of stepped holes 342 and the plurality of fixing holes 322 to assemble the buffering pad 34 to the rotating body 32. The abrasive paper 38 is pasted to the buffering pad 34. When in use, the driving body 12 drives the rotating shaft 14 and the elastic coupler 16 to rotate the polishing head 30, and the polishing head 30 polishes the housing. The elastic coupler 16 and the buffering pad 34 buffer vibration from the polishing head 30 to enhance a polishing effect of the polishing head 30.

In other embodiments, the stepped holes 342 and the fixing holes 322 may be omitted, such that the buffering pad 34 is directly pasted to the rotating body 32. The elastic coupler 16 may be omitted, such that the polishing head 30 is directly fixed to the rotating shaft 14.

The rotating body 32 is made of metallic materials, such that a mechanical strength of the polishing device 100 is enhanced. The buffering pad 34 is assembled to the bottom surface of the rotating body 32. Therefore, the abrasive paper 38 is prevented from deforming, and damage to an edge of the housing is avoided.

Finally, while various embodiments have been described and illustrated, the disclosure is not to be construed as being limited thereto. Various modifications can be made to the embodiments by those skilled in the art without departing from the true spirit and scope of the disclosure as defined by the appended claims. 

What is claimed is:
 1. A polishing device, comprising a driving member and a polishing head connected to the driving member, the polishing head comprising: a rotating body made of metallic material; a buffering pad made of plastic material and fixedly assembled to the rotating body; and an abrasive paper fixed to a side of the buffering pad opposite to the rotating body.
 2. The polishing device of claim 1, wherein the polishing head further comprises a plurality of fixing members, the rotating body defines a plurality of fixing holes therein, the buffering pad defines a plurality of stepped holes therein, the plurality of fixing members extend through the plurality of fixing holes and the plurality of stepped holes to assemble the buffering pad to the rotating pad.
 3. The polishing device of claim 1, wherein the buffering pad is made of rubber.
 4. The polishing device of claim 3, wherein the buffering pad is made of polyurethane rubber.
 5. The polishing device of claim 1, wherein the driving member comprises a driving body and a rotating shaft connected to the driving body, and the polishing head is assembled to the rotating shaft away from the driving body.
 6. The polishing device of claim 5, wherein the driving member further comprises an elastic coupler, the rotating shaft interconnects the elastic coupler and the driving body, and the polishing head is assembled to the elastic coupler away from the driving body.
 7. The polishing device of claim 1, wherein the abrasive paper is a gummed abrasive paper with adhesive on a reverse face contacting the buffering pad, and the abrasive paper has a diameter equal to that of the buffering pad.
 8. A polishing device, comprising a driving member and a polishing head connected to the driving mebmer, the polishing head comprising: a rotating body made of metallic material; a buffering pad made of plastic material and fixedly assembled to the rotating body; and an abrasive paper having a diameter equal to that of the buffering pad, and pasted to the buffering pad opposite to the rotating body.
 9. The polishing device of claim 8, wherein the polishing device further comprises a plurality of fixing members, the rotating body defines a plurality of fixing holes therein, the buffering pad defines a plurality of stepped holes therein, and the plurality of fixing members extend through the plurality of fixing holes and the plurality of stepped holes to assemble the buffering pad to the rotating pad.
 10. The polishing device of claim 8, wherein the buffering pad is made of rubber.
 11. The polishing device of claim 10, wherein the buffering pad is made of polyurethane rubber.
 12. The polishing device of claim 8, wherein the driving member comprises a driving body and a rotating shaft connected to the driving body, and the polishing head is assembled to the rotating shaft away from the driving body.
 13. The polishing device of claim 12, wherein the driving member further comprises an elastic coupler, the rotating shaft interconnects the elastic coupler and the driving body, and the polishing head is assembled to the elastic coupler away from the driving body.
 14. The polishing device of claim 8, wherein the abrasive paper is a gummed abrasive paper with adhesive on a reverse face contacting the buffering pad, and the abrasive paper is pasted to the buffering pad by the adhesive.
 15. A polishing device, comprising a driving member and a polishing head connected to the driving member, the polishing head comprising: a rotating body made of metallic material; and a buffering pad made of plastic material and fixedly assembled to the rotating body.
 16. The polishing device of claim 15, wherein the polishing device further comprises a plurality of fixing members, the rotating body defines a plurality of fixing holes therein, the buffering pad defines a plurality of stepped holes therein, and the plurality of fixing members extend through the plurality of fixing holes and the plurality of stepped holes to assemble the buffering pad to the rotating pad.
 17. The polishing device of claim 15, wherein the buffering pad is made of rubber.
 18. The polishing device of claim 17, wherein the buffering pad is made of polyurethane rubber.
 19. The polishing device of claim 15, wherein the driving member comprises a driving body and a rotating shaft connected to the driving body, and the polishing head is assembled to the rotating shaft away from the driving body.
 20. The polishing device of claim 19, wherein the driving member further comprises an elastic coupler, the rotating shaft interconnects the elastic coupler and the driving body, and the polishing head is assembled to the elastic coupler away from the driving body. 